Conditions For Regression Slope Inference
Which one of the following is NOT a necessary condition for the validity of inference on the regression slope?
A
The errors in the response variable (y) for each level of x should be approximately normally distributed.
B
The standard deviation of the response variable (y) should remain roughly constant across values of x.
C
The predictor variable (x) must be normally distributed.
D
The scatterplot of the data should reveal a linear trend.
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